Deep carving is used to accentuate text on decorated tiles. Nice examples can be found at mausolea in the Shah-i-zinda necropolis in Samarkand e.g. on [url=https://orientalarchitecture.com/sid/1452/uzbekistan/samarkand/amir-hoseyn-tomb-shah-i-zinda]the Amir Hussein mausoleum[/url].
Deep carving on the facade of the Amir Hussein mausoleum at the Shah-i-zinda necropolis in Samarkand
Remarkable is the colourful filling of dark coloured glazed 16-pointed stars in contrast with the relief given to the uncoloured irregular hexagons on the spandrel of Ulug Beg madrassa in Samarkand.
Spandrel of the Ulug Beg madrassa in Samarkand
Expoiting relief in decoration is also used on the side walls of the entrance. White ties, realised in relief surround flat colourfully painted 10-pointed stars.